conf.h

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    1 /*-
    2  * Copyright (c) 1990, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  * (c) UNIX System Laboratories, Inc.
    5  * All or some portions of this file are derived from material licensed
    6  * to the University of California by American Telephone and Telegraph
    7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
    8  * the permission of UNIX System Laboratories, Inc.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by the University of
   21  *      California, Berkeley and its contributors.
   22  * 4. Neither the name of the University nor the names of its contributors
   23  *    may be used to endorse or promote products derived from this software
   24  *    without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   36  * SUCH DAMAGE.
   37  *
   38  *      @(#)conf.h      8.5 (Berkeley) 1/9/95
   39  * $FreeBSD: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $
   40  * $DragonFly: src/sys/sys/conf.h,v 1.18 2007/05/09 00:53:35 dillon Exp $
   41  */
   42 
   43 #ifndef _SYS_CONF_H_
   44 #define _SYS_CONF_H_
   45 
   46 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
   47 
   48 #ifndef _SYS_QUEUE_H_
   49 #include <sys/queue.h>
   50 #endif
   51 #ifndef _SYS_TIME_H_
   52 #include <sys/time.h>
   53 #endif
   54 #ifndef _SYS_BIOTRACK_H_
   55 #include <sys/biotrack.h>
   56 #endif
   57 #ifndef _SYS_SYSREF_H_
   58 #include <sys/sysref.h>
   59 #endif
   60 #ifndef _SYS_EVENT_H_
   61 #include <sys/event.h>
   62 #endif
   63 #include <libprop/proplib.h>
   64 
   65 #define SPECNAMELEN     63
   66 
   67 struct tty;
   68 struct disk;
   69 struct vnode;
   70 struct dev_ops;
   71 struct vm_object;
   72 
   73 struct cdev {
   74         u_int           si_flags;
   75         __uint64_t      si_inode;
   76         uid_t           si_uid;
   77         gid_t           si_gid;
   78         int             si_perms;
   79         TAILQ_ENTRY(cdev) link;
   80         int             si_uminor;
   81         int             si_umajor;
   82         struct cdev     *si_parent;
   83         LIST_ENTRY(cdev)        si_hash;
   84         SLIST_HEAD(, vnode) si_hlist;
   85         char            si_name[SPECNAMELEN + 1];
   86         void            *si_drv1;
   87         void            *si_drv2;
   88         struct dev_ops  *si_ops;        /* device operations vector */
   89         struct dev_ops  *si_bops;       /* backing devops vector */
   90         int             si_iosize_max;  /* maximum I/O size (for physio &al) */
   91         struct sysref   si_sysref;
   92         union {
   93                 struct {
   94                         struct tty *__sit_tty;
   95                 } __si_tty;
   96                 struct {
   97                         struct disk *__sid_disk;
   98                         struct mount *__sid_mountpoint;
   99                         int __sid_bsize_phys; /* min physical block size */
  100                         int __sid_bsize_best; /* optimal block size */
  101                 } __si_disk;
  102         } __si_u;
  103         struct bio_track si_track_read;
  104         struct bio_track si_track_write;
  105         time_t          si_lastread;    /* time_uptime */
  106         time_t          si_lastwrite;   /* time_uptime */
  107         struct vm_object *si_object;    /* vm_pager support */
  108         prop_dictionary_t si_dict;
  109         struct kqinfo   si_kqinfo;      /* degenerate delegated knotes */
  110 };
  111 
  112 #define SI_UNUSED01     0x0001
  113 #define SI_HASHED       0x0002  /* in (maj,min) hash table */
  114 #define SI_OVERRIDE     0x0004  /* override uid, gid, and perms */
  115 #define SI_INTERCEPTED  0x0008  /* device ops was intercepted */
  116 #define SI_DEVFS_LINKED 0x0010
  117 #define SI_REPROBE_TEST 0x0020
  118 #define SI_CANFREE      0x0040  /* basically just a propagated D_CANFREE */
  119 
  120 #define si_tty          __si_u.__si_tty.__sit_tty
  121 #define si_disk         __si_u.__si_disk.__sid_disk
  122 #define si_mountpoint   __si_u.__si_disk.__sid_mountpoint
  123 #define si_bsize_phys   __si_u.__si_disk.__sid_bsize_phys
  124 #define si_bsize_best   __si_u.__si_disk.__sid_bsize_best
  125 
  126 #define CDEVSW_ALL_MINORS       0       /* mask of 0 always matches 0 */
  127 
  128 /*
  129  * Special device management
  130  */
  131 #define SPECHSZ 64
  132 #define SPECHASH(rdev)  (((unsigned)(minor(rdev)))%SPECHSZ)
  133 
  134 /*
  135  * Definitions of device driver entry switches
  136  */
  137 
  138 struct buf;
  139 struct bio;
  140 struct proc;
  141 struct uio;
  142 struct knote;
  143 struct ucred;
  144 
  145 struct thread;
  146 
  147 typedef int l_open_t (struct cdev *dev, struct tty *tp);
  148 typedef int l_close_t (struct tty *tp, int flag);
  149 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
  150 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag);
  151 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag,
  152                         struct ucred *cred);
  153 typedef int l_rint_t (int c, struct tty *tp);
  154 typedef int l_start_t (struct tty *tp);
  155 typedef int l_modem_t (struct tty *tp, int flag);
  156 
  157 /*
  158  * Line discipline switch table
  159  */
  160 struct linesw {
  161         l_open_t        *l_open;
  162         l_close_t       *l_close;
  163         l_read_t        *l_read;
  164         l_write_t       *l_write;
  165         l_ioctl_t       *l_ioctl;
  166         l_rint_t        *l_rint;
  167         l_start_t       *l_start;
  168         l_modem_t       *l_modem;
  169         u_char          l_hotchar;
  170 };
  171 
  172 #ifdef _KERNEL
  173 extern struct linesw linesw[];
  174 extern int nlinesw;
  175 
  176 int ldisc_register (int , struct linesw *);
  177 void ldisc_deregister (int);
  178 #define LDISC_LOAD      -1              /* Loadable line discipline */
  179 #endif
  180 
  181 /*
  182  * Swap device table
  183  */
  184 struct swdevt {
  185         udev_t  sw_dev;                 /* For quasibogus swapdev reporting */
  186         int     sw_flags;
  187         int     sw_nblks;               /* Number of swap blocks on device */
  188         int     sw_nused;               /* swap blocks used on device */
  189         struct  vnode *sw_vp;
  190         struct cdev *sw_device;
  191 };
  192 
  193 #define SW_FREED        0x01
  194 #define SW_SEQUENTIAL   0x02
  195 #define SW_CLOSING      0x04
  196 #define sw_freed        sw_flags        /* XXX compat */
  197 
  198 #ifdef _KERNEL
  199 
  200 l_ioctl_t       l_nullioctl;
  201 l_read_t        l_noread;
  202 l_write_t       l_nowrite;
  203 
  204 struct module;
  205 
  206 struct devsw_module_data {
  207         int     (*chainevh)(struct module *, int, void *); /* next handler */
  208         void    *chainarg;      /* arg for next event handler */
  209         /* Do not initialize fields hereafter */
  210 };
  211 
  212 #define DEV_MODULE(name, evh, arg)                                      \
  213 static moduledata_t name##_mod = {                                      \
  214     #name,                                                              \
  215     evh,                                                                \
  216     arg                                                                 \
  217 };                                                                      \
  218 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
  219 
  220 int     count_dev (cdev_t dev);
  221 void    destroy_dev (cdev_t dev);
  222 void    release_dev (cdev_t dev);
  223 cdev_t  get_dev (int x, int y);
  224 cdev_t  reference_dev (cdev_t dev);
  225 struct dev_ops *devsw (cdev_t dev);
  226 const char *devtoname (cdev_t dev);
  227 void    freedev (cdev_t dev);
  228 int     iszerodev (cdev_t dev);
  229 
  230 int     lminor (cdev_t dev);
  231 void    setconf (void);
  232 cdev_t  kgetdiskbyname(const char *name);
  233 int     dev_is_good(cdev_t dev);
  234 
  235 /*
  236  * XXX: This included for when DEVFS resurfaces
  237  */
  238 
  239 #define         UID_ROOT        0
  240 #define         UID_BIN         3
  241 #define         UID_UUCP        66
  242 
  243 #define         GID_WHEEL       0
  244 #define         GID_KMEM        2
  245 #define         GID_TTY         4
  246 #define         GID_OPERATOR    5
  247 #define         GID_BIN         7
  248 #define         GID_GAMES       13
  249 #define         GID_DIALER      68
  250 
  251 #endif /* _KERNEL */
  252 #endif /* _KERNEL || _KERNEL_STRUCTURES */
  253 
  254 #endif /* !_SYS_CONF_H_ */

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sys/sys/conf.h